package org.apache.maven.artifact.resolver;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.util.ArrayList;
import java.util.List;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.repository.ArtifactRepository;

/**
 * Exception caused when one or more artifacts can not be resolved because they are not found in the
 * local or remote repositories.
 */
public class MultipleArtifactsNotFoundException extends ArtifactResolutionException {
  private final List<Artifact> resolvedArtifacts;
  private final List<Artifact> missingArtifacts;

  /** @deprecated use {@link #MultipleArtifactsNotFoundException(Artifact, List, List, List)} */
  @Deprecated
  public MultipleArtifactsNotFoundException(Artifact originatingArtifact, List<Artifact> missingArtifacts, List<ArtifactRepository> remoteRepositories) {
    this(originatingArtifact, new ArrayList<Artifact>(), missingArtifacts, remoteRepositories);
  }

  /**
   * Create an instance of the exception with allrequired information.
   *
   * @param originatingArtifact the artifact that was being resolved
   * @param resolvedArtifacts artifacts that could be resolved
   * @param missingArtifacts artifacts that could not be resolved
   * @param remoteRepositories remote repositories where the missing artifacts were not found
   */
  public MultipleArtifactsNotFoundException(Artifact originatingArtifact, List<Artifact> resolvedArtifacts, List<Artifact> missingArtifacts, List<ArtifactRepository> remoteRepositories) {
    super(constructMessage(missingArtifacts), originatingArtifact, remoteRepositories);
    this.resolvedArtifacts = resolvedArtifacts;
    this.missingArtifacts = missingArtifacts;
  }

  /**
   * artifacts that could be resolved
   *
   * @return {@link List} of {@link Artifact}
   */
  public List<Artifact> getResolvedArtifacts() {
    return resolvedArtifacts;
  }

  /**
   * artifacts that could NOT be resolved
   *
   * @return {@link List} of {@link Artifact}
   */
  public List<Artifact> getMissingArtifacts() {
    return missingArtifacts;
  }

  private static String constructMessage(List<Artifact> artifacts) {
    StringBuilder buffer = new StringBuilder("Missing:\n");

    buffer.append("----------\n");

    int counter = 0;

    for (Artifact artifact : artifacts) {
      String message = (++counter) + ") " + artifact.getId();

      buffer.append(constructMissingArtifactMessage(message, "  ", artifact.getGroupId(), artifact.getArtifactId(),
          artifact.getVersion(), artifact.getType(), artifact.getClassifier(), artifact.getDownloadUrl(),
          artifact.getDependencyTrail()));
    }

    buffer.append("----------\n");

    int size = artifacts.size();

    buffer.append(size).append(" required artifact");

    if (size > 1) {
      buffer.append("s are");
    } else {
      buffer.append(" is");
    }

    buffer.append(" missing.\n\nfor artifact: ");

    return buffer.toString();
  }

}
